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View Full Version : Kef driver but what’s the speaker?


andyrlb
25-09-2018, 08:31
Sadly I only rescued the one .
It weighs a ton ! https://uploads.tapatalk-cdn.com/20180925/49ff703db48bbc31662faf7f5faa1cb8.jpghttps://uploads.tapatalk-cdn.com/20180925/7d351d0c6226aa4d01f2b7c8e788ea02.jpghttps://uploads.tapatalk-cdn.com/20180925/0b817604f1eb978a568747a75c032d7b.jpg
https://uploads.tapatalk-cdn.com/20180925/a9ea1e84c0699aae9ed2d655a72d17e8.jpg


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Lawrence001
25-09-2018, 08:39
I thought you'd know that by now! Early B139 so probably a K2 Celeste if that's a T15. There were also one or two really early speakers, might say on the Kef Museum.

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andyrlb
25-09-2018, 08:42
I thought you'd know that by now! Early B139 so probably a K2 Celeste if that's a T15. There were also one or two really early speakers, might say on the Kef Museum.

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I forgot about the Kef museum DOH!


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Lawrence001
25-09-2018, 08:42
Probably from a kit. Mind you the crossover is.a.bit more complex than I expected.

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walpurgis
25-09-2018, 08:43
Same configuration as Celeste and Concord, but doesn't look like a KEF box. Other makers bought these drivers in for their own speakers.
andyrlb
25-09-2018, 08:45
Looks to be what Kef call “ K2 Baffle “ hence the unknown cabinet


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walpurgis
25-09-2018, 08:48
Interesting that the impedance is marked 12-16 ohms. I don't recall KEF making the B139 in anything other than 8 ohm impedance. Could have been a special order for some maker.
andyrlb
25-09-2018, 08:49
Pretty bloody useless really unless someone needs a white surround B139


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walpurgis
25-09-2018, 08:52
Could use it as a sub.
andyrlb
25-09-2018, 08:56
Could use it as a sub.

[emoji23]


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andyrlb
27-09-2018, 07:32
I seem to be drawn to this brand of speakers !
Who’d have thought
Radford https://uploads.tapatalk-cdn.com/20180927/91e1cdd36c918becd59242de48b02a96.jpg


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andyrlb
27-09-2018, 07:49
And no Kef t15 tweeter but a Celestion T314 https://uploads.tapatalk-cdn.com/20180927/eb9e365e73186f3ba39eccc6704fb3d1.jpghttps://uploads.tapatalk-cdn.com/20180927/b30b181786bf4f54d8d4d4b1a9ee8799.jpg


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walpurgis
27-09-2018, 07:53
Weird combination. The tweeter only operates down to 2kHz and the B139 is not good above 500Hz.
andyrlb
27-09-2018, 07:55
Weird combination. The tweeter only operates down to 2kHz and the B139 is not good above 500Hz.

Perhaps a one off prototype that failed ! Not seen anything like it


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snowman_al
27-09-2018, 08:56
No it is a 'real' production LS. I think it is called a 'Beaumonde'. https://www.audiovintage.fr/leforum/viewtopic.php?t=12411

The Bookshelf had a simple x-over (one cap + one inductor.) https://www.radios-tv.co.uk/radford-speakers/ and https://theartofsound.net/forum/showthread.php?45854-Radford-bookshelf-speakers And see Martyn Miles comment #8.
andyrlb
27-09-2018, 08:59
Yep that’s them , well spotted [emoji1303]


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andyrlb
27-09-2018, 09:12
They were a bargain at £30 blimey. Wish I had the other one [emoji35]
1= junk


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andyrlb
27-09-2018, 09:36
Did you find them on ebay or do you have another source for all the historical oddities/goodies that you find?

Hi Andrew , the pair were not mine .
I have just the one speaker that I was given by someone clearing their loft , the loft was huge and full of junk so I’m hoping the other may appear once they clear the junk .



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snowman_al
27-09-2018, 11:31
Cannot find the other price list at the moment, but the Bookshelf was £30 in 1966, so not going to fund your retirement just yet...
Firebottle
27-09-2018, 11:50
Weird combination. The tweeter only operates down to 2kHz and the B139 is not good above 500Hz.

Hence the complex cross over me thinks.
sq225917
27-09-2018, 15:36
It's not a complex crossover you need to bridge that gap it's Paul bloody Daniels...
andyrlb
27-09-2018, 15:38
Here is said crossover

...https://uploads.tapatalk-cdn.com/20180927/a9261ce89e692410fa3cb8c83d296189.jpg


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walpurgis
28-09-2018, 07:48
They were a bargain at £30 blimey. Wish I had the other one [emoji35]
1= junk

There may have only been one bought. Plenty of people were still using mono systems back then.